states coast guard, the fbi and the media for all their hard work and diligence. and she says both kids are doing great. >>> police in pittsburgh are piecing together clues in the murder of an 18-year-old that was killed just as about he was about to tape a music video. it happened friday evening in buchanan park. abc7 news reporter sergio has details. ♪ >> to his fans the 18-year-old musician was known as mac day. this is a film he filmed this friends earlier this summer. his real name is devon george. he was shot to death friday night at buchanan park in pittsburgh. his uncle said his family is struggling to understand the brutality of his murder. >> he's a well-behaved kid. he has a lot of love in him. and the sad thing about it is his little brothers and sisters were there when this all unfolded. >> police tell us devon and about five other people were about to begin filming at buchanan park when two other people walked up to them and an argument broke out. investigators say devon's group started running in different directions to get away. police tell us de